Ok here is the scenario. A couple of days ago our firewall (a domain joined TMG also configured for NAT and VPN gateway) server got compromised. As a result, it was taken down immediately and replaced the NAT gateway with a small router(temporarily) until a suitable device is arranged.
DCHP service is running on a DC and is leasing addresses ok. However, the servers on the network now have a yellow exclamation mark on the network connection indicating the network connection as unauthenticated and network profile on the servers is now set to public. When changing the network profile to domain it goes back to public automatically This is causing multiple issues on the network due to the
The servers are able to contact DNS, DHCP server, and internet
Servers are also able to contact the domain controllers Symantec SEP is used as a firewall on the servers.
Any ideas what could be causing this problem.?